EXS 24 Logic Sampler Users Group

I'm a new user to Logic 5 on Mac OS X and ESX24.  I currently have no 
samples.  I would like to be able to use Logic and the ESX24 alone 
without an external synthesizer.  I see lots of sample CD's specific to 
one type of sound but not CDs with a lot of different sounds.  Can 
anyone recommend a sample CD or set of CD that will give me the 
equivalent of an external synth ?  I'd like a full compliment of sounds 
including a GM bank.

Jeff Z